Oil-well derrick.



PATENTED DEC. 4, 1906.

I No- 837,402.

w. HBOKART. OIL WELL DERRICK. APPLIUAT IOH FILED MAKER, 1906.

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PATENTEP DEC. 4, 1906.

W. HEGKART.

OIL WELL DERRICK.

' APPLIOATION FILED MAB.22.1906.

2 SHEBTS'SHEET 2.

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UNITED STATES lVILLIAM HEGKART, OF BRADNER, OHIO.

OIL-WELL DERRICK.

are. 837,402.

Specification of Letters Patent.

Patented Dec. 4, 1 906.

Application filed March 22,1906. Serial No. 307,548.

To all whom it may concern:

Be it known that I, WVILLIAM I'TEOKART, a citizen of the United States,residing at Bradner, in the county of 00d and State of Ohio, haveinvented certain new and useful Im provements in Oil-VVell Derricks, ofwhich the following is a specification.

This invention has relation most especially to derricks for use inconnection with deep wells, the purpose being to facilitate theadjustment of the derrick to the well when adapting the same to thework.

In derricks designed for oil-wells. it has been necessary heretofore toadjust the same to the well by backing, and it frequently happens thatconsiderable time is lost in placing the derrick in proper position andadjusting the tackle so as to have the pulley about in vertical linewith the well.

In accordance with this invention it is proposed to devise a derrickwhich may be moved to a position near the well, so as to stand edgewisethereof, said derrick having an adjustable section which may beprojected so as to bring the pulley about in vertical line with thewell, the construction being such that when the work is finished thesection may be lowered and the derrick moved off parallel with the loadpassing said well.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result reference is to be had to the following descriptionand accompanying drawings.

While the invention may be adapted to different forms and conditions bychanges in the structure and minor details without de parting from thespirit or essential features thereof, still the preferred embodiment isshown in the accompanying drawings, in which Figure 1 is a perspectiveview of a derrick embodying the invention. Fig. 2 is an edge viewthereof as seen from the outer side. Fig. 3 is a view of the derrick asit appears when placed in position with its inner edge facing the welland prior to projection of the adjustable section. Fig. 4 is a viewsimilar to Fig. 3, illustrating the adjustable section projected tobring the working portion of the operating rod or cable in vertical linewith the well. Fig. 5 is a detail view in perspective of the guidethrough which the adjustable section operates, showing more clearly thestops for holding said section at an adjusted position. Fig. 6 is a'detail view of the lower portion of the guide and the lower end of theadjustable section, showing the same supported by means of a stop.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

The derrick comprises a relatively fixed section and an adjustablesection. The fixed section comprises an upright 1, a stay 2, and a base3, the upright 'and stay being firmly attached at their lower ends toopposite end portions of the base 3. The upright 1 occupies anapproximately vertical position, whereas the stay 2 is inclined and isspaced a short distance at its upper end from the upright 1. Across-piece 4 connects the upper ends of the parts 1 and 2 and iswidened at a point between said parts 1 and 2 and has an opening 5 inthe widened part, through which the adjustable section 6 is adapted topass. The cross-piece is projected a short distance from the stay 1 andis provided with a pulley 7. Cross-spaces S and incline stays 9 bracethe upper portion of the fixed section of the derrick. A guide 1.0 isconnected to the upper portion of the fixed section of the derrick andinclines about at the same angle as the stay 2 and is preferably securedto said stay. The guide 10 may be of any construction so long as itprovides a substantial support for the lower end of the adjustablesection when the same is projected. The adjustable section 6 is in theform of a post and is moved in the opening 5 and guide 10 and is adaptedto be secured in the adjusted position and to be operated by anysuitable means. A pulley 11 is located at the upper end of theadjustable section and the operating rope or cable 12 passes thereover.The parts 1, 2, and 6 may be tubular or of any construction and may beof metal or other material, as found most advantageous.

The operating rope or cable 12 passes over the pulley 11 and is providedat one end with a suitable hitch or other device, according to thespecial work in hand, and its opposite end is attached to and adapted tobe wound upon a Windlass 13, mounted in bearings provided near the lowerends of the parts 1 and 2. The Windlass 13 may be of any type andadapted to be operated in any accustomed manner.

In practice the derrick when in position adjacent to a well to beoperated is arranged pendicular alinement with the well, as indiing.

cated most clearly in Fig. 4. l/Vith the derrick thus adjusted it willbe understood that the strain on the part of the rope or cable betweenthe well and pulley 11 is in a vertical direction, thereby enabling thepulley to be applied direct without producing any bind- Moreover, thederrick may be conveniently and quickly placed in position and as easilymoved from one place to another, as

' may be required.

The adjustable section 6 may be extended or lowered by any means, andfor convenience the cord or rope 18 is provided, the same passing arounda sheave-pulley 19 at the upper end of the fixed section 1 and havingone end attached to the lower portion of the adjustable section 6 andits opposite end fixed to and adapted to be wound upon a Windlass ordrum 20 near the lower end of the fixed section of the derrick. Thesection 6 when projected or moved upward is adapted to be held in thelocated position by means of one or more stops 21, which are pivotallymounted and have crank-arm's 22 connected therewith. The stops 21 arelocated at different elevations and are arranged in openings 23, formedat one side of the guide 10. The crank-arms 22 are connected by means ofan operating-cord 24, which extends within convenient reach of theground to be pulled upon to withdraw the stops from the path of thesection 6 when it is required to lower the same when projected.

Having thus described the invention, what is claimed as new is 1. Anoil-well derrick comprising an upper adjustable section and a lowerrelatively fixed section, the latter comprising an upright, an inclinedstay, a base-piece connecting the lower ends of the upright and stay,and a cross-piece connecting the upper ends of said upright and stay andhaving an end portion projected from the stay and provided with apulley, an inclined guide secured to the upper portion of the fixedsection and adapted to have the adjustable section movable therein andthrough an opening of said cross-piece, an operating rope or cableadapted to pass over the pulley at the extended end of the cross-pieceand over a pulley at the upper end of the adjustable section, and aWindlass near the lower end of the fixed sec tion for operating saidrope or cable.

2. The herein-described oil-well derrick comprising an upper adjustablesection pro vided at its upper end with a pulley and a lower relativelyfixed section comprising an upright, an inclined stay, a base and acrosspiece, the latter connecting the upper ends of the upright and stayand extended at one end in the rear of the latter and provided with apulley and having the part between the upright and stay widened andformed with an opening, braces connecting the upper portions of theupright and stay, an inclined guide attached to the upper portion of thestay and adapted to have the adjustable section passed therethrough andthrough the opening of the cross-piece, an operating rope or cable, anda Windlass therefor mounted in bearings applied to the lower ends ofsaid upright and stay.

3. In a derrick comprising relatively adjustable sections and guide forthe movable section, of a series of pivoted stops arranged to hold theadjustable section in the located position, and means for simultaneouslyoperating said stops to withdraw them from the path of the adjustablesection to admit of its withdrawal or contraction.

4. In a derrick, the combination of rela tively adjustable sections, aguide therefor provided at intervals in its length with openings,pivoted stops for supporting the adjustable section when projected tothe required position, and an operating-cord connected with the seriesof pivoted stops for withdrawing them from the path of the adjustablesection.

In testimony whereof I aflix my signature in presence of two witnesses.

WVILLIAM HEOKART. [L. s]

Witnesses:

J. H. LAPP, W. B. GREGG.

